To customers: life is full of surprises. Package Includes: 1 x Head Mount Magnifier 1 x User Manual Item Name: Head Mount Magnifier Material: ABS Plastic, Acrylic Optical Lens Features: Adjustable, Dimmable, High Clarity Magnification: 8x, 15x, 23x Lens Focal Length: 62mm, 33mm, 21mm Power Supply: 6 x LR1130 Button Battery(Included) Illumination: 2 LED Lights Size Details: Expanded Size: 17.5cm x 15.5cm x 5.5cm Folding Size: 15.5cm x 8.5cm x 5.5cm Specifications: To eliminate visual fatigue, this magnifying glass has 3 different magnifications of 8/15/23 times, which can be used alternately. It is a head-mounted magnifier that is adjustable and dimmable, which frees your hands and improves your work performance. This head mount magnifier is made of high-quality abs plastic and acrylic optical lens material. The expanded length is 175mm, the width is 155mm and the height is 55mm. And the folding length is 155mm, the width is 85mm and the height is 55mm. This head mount magnifier is suitable for watch maintenance, mobile phone repair, jewelry appreciation, drawing design, etc. Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. We strive for excellence. And hope you have a nice day!